WEBVTT 0 00:00.180 --> 00:05.160 Hey guys, welcome to Day 22 of 100 Days of Code. Today 1 00:05.160 --> 00:07.170 we're going to be building the famous pong game, 2 00:07.770 --> 00:11.610 and you're going to be doing this by using all of the skills that you've learned 3 00:11.700 --> 00:12.533 up till now. 4 00:13.440 --> 00:16.800 Pong is a classic arcade game, 5 00:17.310 --> 00:20.040 probably one of the first arcade games that ever was. 6 00:20.670 --> 00:25.050 And it has a really simple premise. It's basically just a ball 7 00:25.050 --> 00:29.760 that's going across a table and two players each control a paddle 8 00:29.970 --> 00:33.240 bouncing the ball back and forth. If you miss the ball, 9 00:33.300 --> 00:35.010 then the other player scores a point. 10 00:36.000 --> 00:39.180 Now the history of pong is itself kind of fascinating. 11 00:39.570 --> 00:43.350 It was created and written by this guy, Allan Alcorn. 12 00:43.860 --> 00:47.760 And he was a fresh recruit to the Atari company. 13 00:48.450 --> 00:50.520 And in order to test his skills, 14 00:50.550 --> 00:53.580 they decided to get him to create a game, from scratch. 15 00:54.180 --> 00:56.700 And this game happened to be pong, 16 00:57.090 --> 01:02.090 which became a huge success selling loads and loads of machines across bars and 17 01:02.160 --> 01:03.060 pubs in the world. 18 01:03.600 --> 01:08.600 It eventually became so successful that a lot of these bar owners were calling 19 01:08.700 --> 01:13.110 up Atari saying, Hey, your machines are braking after only a few days. 20 01:13.560 --> 01:17.790 And the reason when they investigated was because the machines were chock-a- 21 01:17.790 --> 01:19.740 block full of money. 22 01:20.010 --> 01:24.690 People were putting their quarters in to play pong and the machine was getting 23 01:24.720 --> 01:26.100 full too quickly. 24 01:26.430 --> 01:30.870 So this is the legendary game that we're going to be building today. As a ways, 25 01:30.930 --> 01:33.390 the first step is to break down the problem. 26 01:33.840 --> 01:35.640 And I want you to have a go at this, 27 01:35.670 --> 01:40.140 think about how you would take this pong game that you've seen here, 28 01:40.590 --> 01:45.480 and which components would we need to write code for, which components might fit 29 01:45.480 --> 01:47.430 well in its own separate class, 30 01:47.760 --> 01:52.740 and how might we break down the logic of this game so that we can solve it piece 31 01:52.740 --> 01:56.910 by piece. Now, I want you to take a piece of paper, 32 01:57.000 --> 02:02.000 take a look at the game screen right here and make a note of which components 33 02:02.310 --> 02:06.990 you think could be separated into their own classes. Briefly, 34 02:06.990 --> 02:11.280 pause the video and jot down some notes on how you might structure the code for 35 02:11.280 --> 02:12.113 this game. 36 02:15.080 --> 02:18.860 Now I've broken this tutorial down into eight pieces. 37 02:19.340 --> 02:22.910 Keep a piece of paper to hand throughout today so that you can compare your 38 02:22.910 --> 02:24.770 structure to the sample solution. 39 02:25.520 --> 02:28.430 Pong is a much more complex game than snake. 40 02:28.580 --> 02:33.050 So pausing to think about the structure of the code now will help you a lot more 41 02:33.260 --> 02:37.310 in the upcoming lessons and it'll make it easier for you to see how everything 42 02:37.310 --> 02:41.900 fits together. First, we're going to figure out how to create the screen, 43 02:42.230 --> 02:46.400 how to create and move a puddle, and then create another puddle 44 02:46.400 --> 02:50.840 so we can have a two-player game and then create the ball and make it move 45 02:50.900 --> 02:55.520 constantly across the screen and figure out when it collides with a wall and 46 02:55.520 --> 03:00.160 make it bounce back and then detect when there's a collision with the paddle to 47 03:00.160 --> 03:04.510 know when to bounce it back. Finally, we'll figure out when a user scores, 48 03:04.780 --> 03:09.370 when the paddle misses the ball, and we'll keep the score using a scoreboard 49 03:09.400 --> 03:13.150 like before. Now, if you're feeling really confident, 50 03:13.510 --> 03:16.240 you can, in fact, just create a blank project, 51 03:16.510 --> 03:21.040 go through these steps one by one and see if you can code up this game by 52 03:21.040 --> 03:23.860 yourself. But what I recommend though 53 03:23.890 --> 03:28.810 is to go along with the videos and I'm going to explain each of the problems one 54 03:28.810 --> 03:32.560 by one, and you can have a go at building it alongside with me. 55 03:33.070 --> 03:35.050 So if you decide to follow along with me, 56 03:35.200 --> 03:37.630 head over to the next lesson and we'll get started. 57 03:38.050 --> 03:40.120 If you decide to create everything from scratch, 58 03:40.360 --> 03:43.510 then pause the video and start creating the game now.